package com.example.community.event;

import com.alibaba.fastjson.JSONObject;
import com.example.community.entity.DiscussPost;
import com.example.community.entity.Event;
import com.example.community.entity.Message;
import com.example.community.service.DiscussPostService;
import com.example.community.service.ElasticsearchService;
import com.example.community.service.MessageService;
import com.example.community.util.CommunityConstant;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.stereotype.Component;

import java.io.IOException;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
// 消费者
@Component
public class EventConsumer implements CommunityConstant {

    private static final Logger logger = LoggerFactory.getLogger(EventConsumer.class);

    @Autowired
    private MessageService messageService;
    @Autowired
    private DiscussPostService discussPostService;
    @Autowired
    private ElasticsearchService elasticsearchService;

    @Value("${wk.image.command}")
    private String wiImageCommand;

    @Value("${wk.image.storage}")
    private String wiImageStorage;

    // 评论、点赞、关注 事件
    @KafkaListener(topics = {TOPIC_COMMENT, TOPIC_LIKE, TOPIC_FOLLOW})
    public void handleCommentMessage(ConsumerRecord record) {
        if (record == null || record.value() == null) {
            logger.error("消息的内容为空！");
            return;
        }
        Event event = JSONObject.parseObject(record.value().toString(), Event.class);
        if (event == null) {
            logger.error("消息格式错误！");
            return;
        }

        // 发送站内通知
        Message message = new Message();
        message.setFromId(SYSTEM_USER_ID);  // 消息发布者-系统用户
        message.setToId(event.getEntityUserId());
        message.setConversationId(event.getTopic());
        message.setStatus(0);
        message.setCreateTime(new Date());

        Map<String, Object> content = new HashMap<>();  // 通知内容
        content.put("userId", event.getUserId());
        content.put("entityType", event.getEntityType());
        content.put("entityId", event.getEntityId());

        if(!event.getData().isEmpty()){
            for(Map.Entry<String, Object> entry : event.getData().entrySet()){
                content.put(entry.getKey(), entry.getValue());
            }
        }

        message.setContent(JSONObject.toJSONString(content));   // 转换成json字符串
        messageService.addMessage(message);
    }

    // 消费发帖事件
    @KafkaListener(topics = {TOPIC_PUBLISH})
    public void handlePublishMessage(ConsumerRecord record){
        if (record == null || record.value() == null) {
            logger.error("消息的内容为空！");
            return;
        }
        Event event = JSONObject.parseObject(record.value().toString(), Event.class);
        if (event == null) {
            logger.error("消息格式错误！");
            return;
        }

        DiscussPost post = discussPostService.findDiscussPostById(event.getEntityId());
        elasticsearchService.saveDiscussPost(post);

    }
    // 消费发帖事件
    @KafkaListener(topics = {CommunityConstant.TOPIC_publish_ans})
    public void handleMessageTOPIC_publish_ans(ConsumerRecord record){
        if (record == null || record.value() == null) {
            logger.error("消息的内容为空！");
            return;
        }
        Event event = JSONObject.parseObject(record.value().toString(), Event.class);
        if (event == null) {
            logger.error("消息格式错误！");
            return;
        }
//        不是列表传递数据 只是id
        final Map<String, Object> data = event.getData();
//        data.get()

        DiscussPost post = discussPostService.findDiscussPostById(event.getEntityId());
        elasticsearchService.saveDiscussPost(post);

    }
    // 消费删帖事件
    @KafkaListener(topics = {TOPIC_DELETE})
    public void handleDeleteMessage(ConsumerRecord record){
        if (record == null || record.value() == null) {
            logger.error("消息的内容为空！");
            return;
        }
        Event event = JSONObject.parseObject(record.value().toString(), Event.class);
        if (event == null) {
            logger.error("消息格式错误！");
            return;
        }
        // 删除
        elasticsearchService.deleteDiscussPost(event.getEntityId());

    }

    // 消费分享事件
    @KafkaListener(topics = TOPIC_SHARE)
    public void handleShareMessage(ConsumerRecord record){
        if (record == null || record.value() == null) {
            logger.error("消息的内容为空！");
            return;
        }
        Event event = JSONObject.parseObject(record.value().toString(), Event.class);
        if (event == null) {
            logger.error("消息格式错误！");
            return;
        }

        String htmlUrl = (String) event.getData().get("htmlUrl");
        String fileName = (String) event.getData().get("fileName");
        String suffix = (String) event.getData().get("suffix");

        String cmd = wiImageCommand + " --quality 75 "
                + htmlUrl + " " + wiImageStorage + "/" + fileName + suffix;

        try {
            Runtime.getRuntime().exec(cmd);
            logger.info("生成长图成功：" + cmd);
        } catch (IOException e) {
            logger.error("生成长图失败：" + e.getMessage());
        }


    }


}
